Waterproof coiled material lap joint structure

Abstract

The utility model provides a waterproof coiled material lap joint structure which comprises a coiled material A, a coiled material B and a lap joint strip, one side of the coiled material A extends to form an upper meshing piece and a lower meshing piece which are overlapped up and down, one side of the coiled material B extends to form an inserting piece used for being inserted between the upper meshing piece and the lower meshing piece, and the edge, adjacent to the inserting piece, of the coiled material B is provided with a butt joint area. The lap joint strip is applied to a butt joint area of two adjacent coiled materials B, the lap joint strip comprises a lap joint area and an inserting area, the lap joint area is cushioned below the butt joint area of the two adjacent coiled materials B, the inserting area is inserted between an upper meshing piece and a lower meshing piece along with inserting pieces of the coiled materials B, the upper meshing piece, the lower meshing piece and the inserting piece are inserted into the lap joint area, and the upper meshing piece, the lower meshing piece and the inserting area are inserted into the lap joint area. The butt joint area and the lap joint area are connected through glue. The coiled material is convenient to lay and splice; the sealing performance of the splicing part is good; the double-layer structure can be prefabricated in a factory, the complexity of site construction is reduced, repeated coating or stacking of materials is not needed, and time and labor cost are saved.

Description

Technical Field

[0001] This utility model relates to the field of waterproof membranes, and in particular, to a waterproof membrane overlap structure. Background Technology

[0002] Waterproof membranes are mainly used in building walls, roofs, tunnels, highways, landfills, etc., to resist external rainwater and groundwater seepage. They are flexible, rollable building materials that serve as a leak-proof connection between the foundation and the building, acting as the first line of defense for waterproofing the entire project and playing a crucial role. Common waterproof membranes include asphalt waterproof membranes and polymer waterproof membranes. Asphalt waterproof membranes are traditional waterproof membranes, low in cost but with low tensile strength and elongation, poor temperature stability, prone to flowing at high temperatures and cracking at low temperatures; they also have poor aging resistance and a short service life, classifying them as low-grade waterproof membranes. Polymer waterproof membranes are rollable sheet waterproof materials made from synthetic rubber, synthetic resin, or blends of both as base materials, with the addition of appropriate chemical additives and fillers, using rubber or plastic processing techniques such as mixing, extrusion, or calendering.

[0003] In existing technologies, the edges of waterproof membranes are mostly joined by applying waterproof adhesive to the edges of the membrane, then aligning the edges of the next piece of membrane with the adhesive and attaching it to the membrane. This splicing structure and method, after a period of use, is prone to failure due to corrosion and erosion at the joints, resulting in poor sealing and cumbersome construction. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a waterproof membrane overlap structure with good sealing at the joint, a stable splicing structure, and simple operation.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is: a waterproof roll material overlap structure, including roll material A, roll material B, and overlap strip. One side of roll material A extends to form an upper interlocking piece and a lower interlocking piece that overlap vertically. One side of roll material B extends to form an insert piece for insertion between the upper interlocking piece and the lower interlocking piece. A mating area is provided on the side of roll material B adjacent to the insert piece. The overlap strip is applied to the mating area of ​​two adjacent roll materials B. The overlap strip includes an overlap area and an insert area. The overlap area is placed under the mating area of ​​two adjacent roll materials B. The insert area is inserted between the upper interlocking piece and the lower interlocking piece together with the insert piece of roll material B. The upper interlocking piece, the lower interlocking piece, and the insert piece, the upper interlocking piece, the lower interlocking piece, and the insert area, the mating area, and the overlap area are all connected by adhesive.

[0006] With the above technical solution, when using it, roll A is first laid in the construction area. Usually, roll B is supported by roll A, and multiple rolls of roll B are spliced ​​on one side of roll A. When laying multiple rolls of roll B on one side of roll A, roll B is first moved towards roll A so that the interlocking piece of roll B overlaps with the upper and lower interlocking pieces. Here, the upper interlocking piece can be folded upward first so that the interlocking piece can be inserted.

[0007] Then, bring the butt joint areas of the two adjacent rolls B together and align them, and then insert an overlap strip under the butt joint area of ​​the two rolls B; ensure that the overlap area of ​​the overlap strip overlaps with the butt joint area; here, the position of the insertion area of ​​the overlap strip should overlap with the position of the insertion piece.

[0008] Then, insert the interlocking area of ​​the overlap strip together with the interlocking piece between the upper and lower interlocking pieces, and keep the two flat and aligned; thus, the splicing of roll A and roll B is completed;

[0009] Here, roll A and roll B are interlocked at the seam, and roll B is spliced ​​with roll B by an overlap strip. In addition, one end of the overlap strip used to overlap the two rolls B is also inserted into roll A, which effectively ensures the sealing of the splice and the stability of the splice.

[0010] Preferably, both the roll A and the roll B have a first self-adhesive layer on their downward-facing sides, and a first release film is provided on the first self-adhesive layer.

[0011] With the above technical solution, the first self-adhesive layer is used for pre-bonding to the construction area, and it can be used simply by peeling off the first release film, which is convenient to operate.

[0012] Preferably, each of the upper and lower bite pieces has a second self-adhesive layer on its opposite sides, and a second release film is provided on the second self-adhesive layer.

[0013] The above technical solution enables both the upper and lower occlusal teeth to have self-adhesive properties.

[0014] Preferably, the side of the roll material facing upwards at the splice has a third self-adhesive layer, and a third release film is provided on the third self-adhesive layer.

[0015] The above technical solution enables the connector to have self-adhesive properties, which facilitates installation and ensures sealing.

[0016] Preferably, the upper and lower surfaces of the overlap strip are provided with a fourth self-adhesive layer, the fourth self-adhesive layer is provided with a fourth release film at the overlap area, and the fourth self-adhesive layer is provided with a fifth release film at the insertion area.

[0017] The above technical solution allows for the removal of the isolation film in sections as needed, making the operation convenient.

[0018] Preferably, both roll A and roll B are formed by stacking a first sheet and a second sheet. The first sheet includes a reactive protective layer, a non-asphalt-based hot melt adhesive layer, a polymer waterproof layer, and a self-adhesive layer stacked in sequence. The second sheet includes a polymer waterproof layer, a self-adhesive layer, and an anti-stick layer stacked in sequence. The self-adhesive layer of the first sheet is bonded to the polymer waterproof layer of the second sheet.

[0019] Through the aforementioned technical solutions, the reactive protective layer and the non-asphalt-based hot melt adhesive layer give the waterproof membrane better durability and anti-aging capabilities, enabling it to maintain excellent waterproofing performance for a long time. This double-layer structure effectively improves the waterproof performance and durability of the waterproof membrane, providing dual protection; even if one layer is damaged or ages, the other layer can still maintain its waterproofing effect. Furthermore, the polymer composite waterproof membrane composed of the two layers can be prefabricated in the factory, reducing the complexity of on-site construction. Construction workers only need to lay it once, eliminating the need for multiple coatings or stacking of materials, saving time and labor costs. The factory environment is more stable and controlled, ensuring the stability and consistency of product quality.

[0020] The main technical effects of this utility model are reflected in the following aspects:

[0021] 1. The roll material is easy to lay and splice;

[0022] 2. The roll material has good waterproof performance and durability, and the joints are well sealed;

[0023] 3. The double-layer structure can be prefabricated in the factory, reducing the complexity of on-site construction. It only needs to be laid once, without the need for multiple coatings or stacking of materials, saving time and labor costs. Attached Figure Description

[0024] Figure 1 This is a top-view diagram showing the interlocking state of roll material A, roll material B, and overlap strip in the embodiment.

[0025] Figure 2 This is a side view diagram of the spliced ​​state of roll material A, roll material B, and overlap strip in the embodiment.

[0026] Figure 3 This is a schematic diagram of the structure of roll material A in the embodiment;

[0027] Figure 4 This is a schematic diagram of the layer structure of roll material A in the embodiment;

[0028] Figure 5 This is a side view of the structure of roll material B in the embodiment;

[0029] Figure 6 This is a side view of the overlapping strip in the embodiment;

[0030] Figure 7 This is a schematic diagram showing the overlap position of roll material B and the overlap strip in the embodiment;

[0031] Figure 8 This is a schematic diagram showing the overlap position of roll material A and the overlap strip in the embodiment.

[0032] Reference numerals: 1. Roll material A; 11. Upper interlocking piece; 12. Lower interlocking piece; 101. First self-adhesive layer; 102. First release film; 103. Second self-adhesive layer; 104. Second release film; 2. Roll material B; 21. Insertion piece; 22. Butt joint area; 201. Third self-adhesive layer; 202. Third release film; 3. Overlap strip; 31. Overlap area; 32. Insertion area; 301. Fourth self-adhesive layer; 302. Fourth release film; 303. Fifth release film; 4. First sheet; 41. Reactive protective layer; 42. Non-asphalt-based hot melt adhesive layer; 43. Polymer waterproof layer; 44. Self-adhesive layer; 5. Second sheet; 51. Self-adhesive layer; 52. Anti-stick layer; 6. Overlap joint of roll material A, roll material B, and overlap strip. Detailed Implementation

[0033] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, so that the technical solution of this utility model can be more easily understood and mastered.

[0034] As attached Figure 1-8 The waterproof membrane overlap structure shown includes membrane A1, membrane B2, and overlap strip 3. One side of membrane A1 extends to form an upper interlocking piece 11 and a lower interlocking piece 12 that overlap vertically. One side of membrane B2 extends to form an insert piece 21 for insertion between the upper interlocking piece 11 and the lower interlocking piece 12. A mating area 22 is provided on the side of membrane B2 adjacent to the insert piece 21. The overlap strip 3 is applied to the mating area 22 of two adjacent membrane pieces B2. The overlap strip 3 includes an overlap area 31 and an insert area 32. The overlap area 31 is placed under the mating area 22 of two adjacent membrane pieces B2, and the insert area 32 is inserted between the upper interlocking piece 11 and the lower interlocking piece 12 together with the insert piece 21 of membrane B2.

[0035] The roll material A1 and roll material B2 each have a first self-adhesive layer 101 on their downward-facing sides, and a first release film 102 on the first self-adhesive layer 101. The upper interlocking piece 11 and the lower interlocking piece 12 each have a second self-adhesive layer 103 on their opposite sides, and a second release film 104 on the second self-adhesive layer 103. The roll material B2 has a third self-adhesive layer 201 at the insertion piece 21 on its upward-facing side, and a third release film 202 on the third self-adhesive layer 201. The overlap strip 3 has a fourth self-adhesive layer 301 on both its upper and lower sides, a fourth release film 302 on the fourth self-adhesive layer 301 at the overlap area 31, and a fifth release film 303 on the fourth self-adhesive layer 301 at the insertion area 32.

[0036] When using: First, lay roll A1 in the construction area. Usually, roll B2 is placed against roll A1, and multiple rolls of roll B2 are spliced ​​on one side of roll A1. When laying multiple rolls of roll B2 on one side of roll A1, first move roll B2 towards roll A1 so that the interlocking piece 21 of roll B2 overlaps with the upper interlocking piece 11 and the lower interlocking piece 12. Here, the upper interlocking piece 11 can be folded upwards first so that the interlocking piece 21 can be inserted.

[0037] Then, the mating areas 22 of the two adjacent rolls B2 are brought together and aligned, and then an overlap strip 3 is inserted under the mating areas 22 of the two rolls B2; ensure that the overlap area 31 of the overlap strip 3 overlaps with the mating area 22; here, the position of the insertion area 32 of the overlap strip 3 should overlap with the position of the insertion piece 21.

[0038] Then, the interlocking area 32 of the overlap strip 3 is inserted together with the interlocking piece 21 between the upper interlocking piece 11 and the lower interlocking piece 12, and the two are kept flat and aligned; thus, the splicing of roll material A1 and roll material B2 is completed.

[0039] Here, roll A1 and roll B2 are interlocked at the seam, and roll B2 is spliced ​​with roll B2 by overlap strip 3. In addition, one end of the overlap strip 3 used to overlap the two rolls B2 is also inserted into roll A1, which effectively ensures the sealing of the splice and the stability of the splice.

[0040] Furthermore, both roll A1 and roll B2 are composed of a first sheet 4 and a second sheet stacked together. The first sheet 4 includes a reactive protective layer 41, a non-bitumen-based hot melt adhesive layer 42, a polymer waterproof layer 43, and a self-adhesive layer stacked sequentially. The second sheet includes a polymer waterproof layer 43, a self-adhesive layer, and an anti-stick layer stacked sequentially. The self-adhesive layer of the first sheet 4 is bonded to the polymer waterproof layer 43 of the second sheet. The reactive protective layer 41 and the non-bitumen-based hot melt adhesive layer 42 give the waterproof roll better durability and anti-aging ability, enabling it to maintain good waterproof performance for a long time. This double-layer structure effectively improves the waterproof performance and durability of the waterproof roll, providing dual protection. Even if one layer is damaged or aged, the other layer can still maintain its waterproof effect. Moreover, the polymer composite waterproof roll composed of the two layers can be prefabricated in the factory, reducing the complexity of on-site construction. Construction workers only need to lay it once, without the need for multiple coatings or stacking of materials, saving time and labor costs. A more stable and controlled factory environment can ensure the stability and consistency of product quality.

[0041] Of course, the above are just typical examples of this utility model. In addition, this utility model may have many other specific implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed by this utility model.

Claims

1. A waterproof membrane overlap structure, characterized in that: The assembly includes roll A (1), roll B (2), and an overlap strip (3). One side of roll A (1) extends to form an upper interlocking piece (11) and a lower interlocking piece (12) that overlap vertically. One side of roll B (2) extends to form an insert piece (21) for insertion between the upper interlocking piece (11) and the lower interlocking piece (12). A mating area (22) is provided on the side of roll B (2) adjacent to the insert piece (21). The overlap strip (3) is applied to the mating area (22) of two adjacent rolls B (2). 3) Includes an overlap area (31) and an insertion area (32). The overlap area (31) is placed under the butt joint area (22) of two adjacent rolls B (2). The insertion area (32) is inserted between the upper interlocking piece (11) and the lower interlocking piece (12) together with the insertion piece (21) of the roll B (2). The upper interlocking piece (11), the lower interlocking piece (12) and the insertion piece (21), the upper interlocking piece (11), the lower interlocking piece (12) and the insertion area (32), and the butt joint area (22) and the overlap area (31) are all connected by adhesive.

2. The waterproof membrane overlap structure according to claim 1, characterized in that: Both the roll A (1) and the roll B (2) have a first self-adhesive layer (101) on their downward-facing side, and a first release film (102) is provided on the first self-adhesive layer (101).

3. The waterproof membrane overlap structure according to claim 1, characterized in that: The upper bite piece (11) and the lower bite piece (12) each have a second self-adhesive layer (103) on their opposite sides, and a second release film (104) is provided on the second self-adhesive layer (103).

4. The waterproof membrane overlap structure according to claim 1, characterized in that: The upper side of the roll material B (2) is provided with a third self-adhesive layer (201) at the insertion piece (21), and a third release film (202) is provided on the third self-adhesive layer (201).

5. The waterproof membrane overlap structure according to claim 1, characterized in that: The upper and lower surfaces of the overlap strip (3) are provided with a fourth self-adhesive layer (301), the fourth self-adhesive layer (301) is provided with a fourth isolation film (302) at the overlap area (31), and the fourth self-adhesive layer (301) is provided with a fifth isolation film (303) at the insertion area (32).

6. The waterproof membrane overlap structure according to claim 1, characterized in that: Both the roll material A (1) and the roll material B (2) are formed by stacking a first sheet (4) and a second sheet (5). The first sheet (4) includes a reactive protective layer (41), a non-asphalt-based hot melt adhesive layer (42), a polymer waterproof layer (43), and a self-adhesive layer (51) stacked in sequence. The second sheet includes a polymer waterproof layer (43), a self-adhesive layer (51), and an anti-stick layer (52) stacked in sequence. The self-adhesive layer (51) of the first sheet (4) is bonded to the polymer waterproof layer (43) of the second sheet (5).

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